caa a22 4500 445846968 CHVBK 20180317145401.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10518-011-9248-4 doi (NATIONALLICENCE)springer-10.1007/s10518-011-9248-4 Separation of source and site effects by generalized inversion technique using the aftershock recordings of the 2009 L'Aquila earthquake [Elektronische Daten] [G. Ameri, A. Oth, M. Pilz, D. Bindi, S. Parolai, L. Luzi, M. Mucciarelli, G. Cultrera] We exploit S-wave spectral amplitudes from 112 aftershocks (3.0≤ ML≤ 5.3) of the L'Aquila 2009 seismic sequence recorded at 23 temporary stations in the epicentral area to estimate the source parameters of these events, the seismic attenuation characteristics and the site amplification effects at the recording sites. The spectral attenuation curves exhibit a very fast decay in the first few kilometers that could be attributed to the large attenuation of waves traveling trough the highly heterogeneous and fractured crust in the fault zone of the L'Aquila mainshock. The S-waves total attenuation in the first 30km can be parameterized by a quality factor QS(f)=23f 0.58 obtained by fixing the geometrical spreading to 1/R. The source spectra can be satisfactorily modeled using the omega-square model that provides stress drops between 0.3 and 60MPa with a mean value of 3.3±2.8 MPa. The site responses show a large variability over the study area and significant amplification peaks are visible in the frequency range from 1 to more than 10Hz. Finally, the vertical component of the motion is amplified at a number of sites where, as a consequence, the horizontal-to-vertical spectral ratios (HVSR) method fails in detecting the amplitude levels and in few cases the resonance frequencies. Springer Science+Business Media B.V., 2011 L'Aquila Sequence nationallicence Generalized inversion technique nationallicence Site effects nationallicence Source parameters nationallicence Seismic attenuation nationallicence Ameri G. Istituto Nazionale di Geofisica e Vulcanologia, via Bassini 15, 20133, Milano, Italy aut Oth A. European Center for Geodynamics and Seismology, rue Josy Welter 19, 7256, Walferdange, Luxembourg aut Pilz M. Section 2.1, Telegrafenberg, Deutsches GeoForschungsZentrum GFZ, Helmholtzstraße 7, 14467, Potsdam, Germany aut Bindi D. Centre for Disaster Management and Risk Reduction Technology (CEDIM), Deutsches GeoForschungsZentrum GFZ, Helmholtzstraße 7, 14467, Potsdam, Germany aut Parolai S. Section 2.1, Telegrafenberg, Deutsches GeoForschungsZentrum GFZ, Helmholtzstraße 7, 14467, Potsdam, Germany aut Luzi L. Istituto Nazionale di Geofisica e Vulcanologia, via Bassini 15, 20133, Milano, Italy aut Mucciarelli M. Università della Basilicata, via dell'Ateneo Lucano 10, 85100, Potenza, Italy aut Cultrera G. Istituto Nazionale di Geofisica e Vulcanologia, via di Vigna Murata 605, 00143, Roma, Italy aut Bulletin of Earthquake Engineering Springer Netherlands 9/3(2011-06-01), 717-739 1570-761X 9:3<717 2011 9 10518 https://doi.org/10.1007/s10518-011-9248-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10518-011-9248-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ameri G. Istituto Nazionale di Geofisica e Vulcanologia, via Bassini 15, 20133, Milano, Italy aut NATIONALLICENCE 700 1- Oth A. European Center for Geodynamics and Seismology, rue Josy Welter 19, 7256, Walferdange, Luxembourg aut NATIONALLICENCE 700 1- Pilz M. Section 2.1, Telegrafenberg, Deutsches GeoForschungsZentrum GFZ, Helmholtzstraße 7, 14467, Potsdam, Germany aut NATIONALLICENCE 700 1- Bindi D. Centre for Disaster Management and Risk Reduction Technology (CEDIM), Deutsches GeoForschungsZentrum GFZ, Helmholtzstraße 7, 14467, Potsdam, Germany aut NATIONALLICENCE 700 1- Parolai S. Section 2.1, Telegrafenberg, Deutsches GeoForschungsZentrum GFZ, Helmholtzstraße 7, 14467, Potsdam, Germany aut NATIONALLICENCE 700 1- Luzi L. Istituto Nazionale di Geofisica e Vulcanologia, via Bassini 15, 20133, Milano, Italy aut NATIONALLICENCE 700 1- Mucciarelli M. Università della Basilicata, via dell'Ateneo Lucano 10, 85100, Potenza, Italy aut NATIONALLICENCE 700 1- Cultrera G. Istituto Nazionale di Geofisica e Vulcanologia, via di Vigna Murata 605, 00143, Roma, Italy aut NATIONALLICENCE 773 0- Bulletin of Earthquake Engineering Springer Netherlands 9/3(2011-06-01), 717-739 1570-761X 9:3<717 2011 9 10518 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer